Cool, Calm & Collectible Aquamarine: A March Birthstone Report

According to the American Gem Society, the serene blue-green color of aquamarine, the March birthstone, is said to cool the temper, allowing the wearer to remain calm and even-keeled. If that sounds appealing in these turbulent times, perhaps we all might consider purchasing a piece of aquamarine jewelry — whether or not our birthday falls in March. Here are a few collectible aquamarine jewels from Sotheby’s and Christie’s to inspire us.

Sterlé Bird Brooch
Sterlé Bird Brooch. Photo Courtesy of

A Bluebird of Happiness

Aquamarine fans will be among those gathering in London on March 22 for Sotheby’s Fine Jewels sale. Featuring more than 280 lots, the auction includes an important aquamarine brooch by innovative French designer Pierre Sterlé.

Designed circa 1970, the gem-set and diamond brooch resembles a stylized bird “…composed of overlaid squared rods bursting into flight and set throughout with circular-cut sapphires and brilliant-cut diamonds, around a cabochon aquamarine body.”

The aquamarine and diamond bird brooch by Sterlé is estimated at $29,000 to $39,000.

Art Deco Aquamarine and Diamond Bracelet by Cartier
This Art Deco aquamarine and diamond bracelet by Cartier fetched $269,000 in 2014. Photo Courtesy of

Classic Cartier Aquamarines

Aquamarines have been central to the designs of famed jeweler Cartier ever since the Art Deco period. Several important examples from the 1930s appeared at auction at Christie’s in 2014.

In a statement about the June sale, Christie’s New York auctioneers explained the allure of the March birthstone: “At their best, aquamarines display a fresh light blue which, when paired with diamonds, creates a chic and subtle, yet bold, combination.”

Writing about the November 2014 Christie’s London sale, jewelry expert Joanna Hardy praised a pair of Cartier Art Deco aquamarine and diamond ear pendants. “They are extremely wearable and speak eloquently of the period in which they were made; a time of elegance and decadence,” she said.

Aquamarine and Diamond Ear Pendants
Cartier Aquamarine and Diamond Ear Pendants. Photo Courtesy of

According to Hardy, at the turn of the 20th century, as a reaction to the somber palette of the 19th century, lighter colors suddenly became very fashionable. Aquamarine, with its liquid-like luster and icy blue color, was perfectly suited to the new tastes of the day.

Fit for a Princess

Princess Margaret's Aquamarine and Diamond Brooch
Princess Margaret and Her Aquamarine and Diamond Brooch. Photo Courtesy of

Designed in 1932 by Cartier, this openwork aquamarine and diamond brooch was in the collection of H.R.H. The Princess Margaret, Countess of Snowden. The brooch was estimated at $4,600 to $6,440 when it hit the auction block at Christie’s London in 2016. Proving the power of a royal provenance, it realized $121,440.





Best way to clean an aquamarine, a complete step-by-step guide to cleaning aquamarine jewelry.




Leave a Reply

Your email address will not be published. Required fields are marked *